Cushion for a respiratory mask



FIG. 1 is a front perspective illustration showing a cushion for a respiratory mask according to of our design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

FIGS. 1–7 use stippling to indicate surface shading. 

The ornamental design of a cushion for a respiratory mask, as shown and described. 